Engineering:Drawdown card
From HandWiki
Short description: Tool for assessing opacity and contrast ratio of coatings
Drawdown cards are used for testing paints and coatings through wet film preparation.
Black and white cards are used to measure both opacity and contrast ratio.[1] By measuring reflectance values of both parts of the card one can gain a quantitative opacity value of a paint sample.[2]
References
- ↑ "Paper, Film and Foil Converter 1987-08: Vol 61 Iss 8 : Free Download, Borrow, and Streaming : Internet Archive". 23 October 2016. https://archive.org/details/sim_paper-film-and-foil-converter_1987-08_61_8/page/177/.
- ↑ Charvat, Robert A. (23 October 2016). "Coloring of plastics- Fundamentals Second Edition : Robert A. Charvat : Free Download, Borrow, and Streaming : Internet Archive". https://archive.org/details/coloringofplasti0000unse_f4z5/page/231/.
See also
- Engineering:Film applicator
- Physics:Glossmeter
- Physics:Spectrometer – Used to measure spectral components of light
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